![]() One steradian on a sphere with a radius of one meter gives a surface of one m². Steradians are a unit of measuring angles in a 3D space (just like radians for a 2D space). To convert from candelas to lumens, you have to multiply the value in candelas by the angular span of the light source in steradians:įor a light source that emits light uniformly in all directions, Ω = 4π. ![]() To learn about LED resistors, visit our LED resistor calculator. A directional LED lamp (spotlight), however, might give light only to a small area around it. The amount of energy passing through 1 square metre of the transparent sphere is 1 lumen, and so it follows that 1 candlepower is 12.57 lumens. ![]() For example, a star shines uniformly in all directions. Lumens, however, are the total amount of light emitted and depend on the type of light source. It means that this value is independent of the directions in which the light is emitted. If you know one of these values (either the luminous intensity or the luminous flux), you can easily convert to the other one.Īs we mentioned before, candelas are a measure of light emitted per steradian (unit solid angle).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |